# ARRI ECS vs Teradek Prism

The clearest difference is update cadence: Teradek Prism at every 3 months against ARRI ECS's every 14 months. Teradek Prism also leads on iOS requirement (13.2 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ARRI ECS ships an update every 14 months, Teradek Prism every 3 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | ARRI ECS | Teradek Prism |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 3 months** |
| Size | 23 MB | 65 MB |
| Requires iOS | 15.6 | **13.2** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ARRI Group](https://appshunter.io/developer/733009342) | [Teradek](https://appshunter.io/developer/450852792) |

## What reviewers say

### ARRI ECS

[App page](https://appshunter.io/ios/app/arri-ecs/id1555674483)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Teradek Prism

[App page](https://appshunter.io/ios/app/teradek-prism/id1582532805)

**In-app purchases:** none


## Frequently asked questions

### Is ARRI ECS free?

ARRI ECS is free to download, with no in-app purchases.

### Is Teradek Prism free?

Teradek Prism is free to download, with no in-app purchases.

### Do ARRI ECS or Teradek Prism have ads?

Neither ARRI ECS nor Teradek Prism shows ads.

### Which is updated more often, ARRI ECS or Teradek Prism?

ARRI ECS ships an update every 14 months, and Teradek Prism every 3 months. Most recently, ARRI ECS was updated on November 3, 2026 and Teradek Prism on November 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*